Why Cooling is Vital in Medical Injection Molding and How to Perfect It
HTML-код
- Опубликовано: 4 ноя 2024
- Cooling is an absolutely vital (and often overlooked) part of the injection molding process, especially in the medical industry. Cooling greatly affects dimensions, which is a huge deal when it comes to safety critical parts with extremely tight tolerances. In this webinar host by MAPP, Cory discusses why cooling efficiency is so important and gives valuable tips on how to master it that you can put into practice immediately. He also reviews and evaluates various cooling media, products, and measuring tools to ensure proper cooling is achieved.
thank you for your presentation. I would like to ask you, what do you recommend to use instead of safety couplings?
Thank You, I am very pro towards scientific molding and always put focus on good cooling according to Rn for turbulent flow is the most important thing
Thanks for sharing!
This information is very useful.
Thx, RJG for sharing knowledge!!
We're so happy it was helpful! Thanks for watching!
Great presentation thanks RJG for the inputs. Is it possible to share the cooling time Excel calculator.
mould temperature and turbulent water flow is vital, in all injection molding process not just medical, bit surprised RJG say especially medical? learned how important water temperature can be 15 years ago, when trialing a a closure mold on an electric machine, and they had over speced the chiller and temperature of the chiller was varying by 7 degrees ,the melt cushion was trending with it,we ended up removing the chiller and replacing it with water heaters, this reduced the melt cushion variation by 0.6 mm,
Great video. Does using larger diameter channels help or hinder If you have a large mold with 1/2npt lines and 1"npt baffles, vs 3/8"npt channels and 3/4" baffles. Some of my customers want bigger holes but if you can't feed it with proper gpm/pressure, the flow may not be strong enough. I notice on North American molds, it's always big lines, 500 series fittings and 3/4 id hose. Then I saw Euro and Asian molds of similar size and it's 10mm water lines with smaller clear plastic hose as they can't use same type of hose we have in NA
Thanks for watching and your kind words. To answer your question regarding 1/2npt lines and 1"npt baffles, vs 3/8"npt channels and 3/4" baffles, it truly depends on gpm/pressure that you mentioned. It would be helpful to know the gpm/pressure that the mold temperature control unit is dispersing at a minimum, and this can be achieved by in-line flowmeters similar to what Smart Flow offer. If the gpm continues to rise the larger 1/2npt hole could provide more adequate heat transfer. On the other hand, if the gpm is reduced when using the 1/2npt hole it could result in much lower heat transfer. NA vs Euro/Asia mold cooling can drastically differ in channel size, as mentioned about bigger is not always better unless you have the GPM and Pressure to back up the larger lines. A constant Depth, Diameter, and Pitch for colling lines also plays a role in effective heat transfer, so it is recommended that mold filling simulation is preformed by a qualified individual utilizing the mold attributes such as cooling line placement and mold material to understand the best scenario for mold cooling.
I specialize in plastic molds in Brazil, both tooling and adjustment and production preparation, I would like to know if you hire foreigners?
Example LSR injection , the solidify temperature is around 140 degree Celsius. Should use pressurised water for better uniform surface temperature?
Good job dad
Really great video vary Informative 😀
We're so glad you enjoyed it! Thanks for watching!
Hi there, we are mold maker in Shenzhen China, please contact us if need make injection molds.
If you need 9 seconds of hold something went wrong somewhere